Lisp. Lisp is the only language

Why there are other programming languages besides Lisp? With Lisp's macro system you can create any language you need ever. Small, big, finely tuned for your task. Supporting other languages means opposing progress and delaying the inevitable future. There should be only one language and myriad languages at the same time. The one language is Lisp.

LISP isnt a language, cuz it doesnt have any syntax. LISP is an operating system.

The existence of an interpreter and the absence of declarations makes it particularly natural to use LISP in a time-sharing environment. It is convenient to define functions, test them, and re-edit them without ever leaving the LISP interpreter. A demonstration of LISP in a prototype time-sharing environment on the IBM 704 was made in 1960 (or 1961). (See Appendix 2). L. Peter Deutsch implemented the first interactive LISP on the PDP-1 computer in 1963, but the PDP-1 had too small a memory for serious symbolic computation.